Atlas Copco Secoroc YT29A Operator Instructions Manual
Secoroc Rock Drilling Tools
Secoroc YT29A Pusher Leg Rock Drill
Operator's instructions / Spare parts list
Secoroc YT Series Rock Drill
Foreword
Thank you for selecting the Secoroc YT29A pusher leg rock drill.
These instructions were developed to help you get the best performance and
productivity from the use of your new rock drill.
Please refer to them also for correct maintenance of the machine.
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Table of Contents
Scope of application ................................................... 4
Specification ....................................................... 4
Safety instructions
Operation
Using the rock drill for the first time .................................... 6
Preparations before starting .......................................... 6
Fitting and removing the tool ......................................... 7
Attaching the pusher leg to the rock drill ................................ 8
Controls ........................................................... 9
Drilling ........................................................... 11
Maintenance ...................................................... 12
Measures to prevent freezing ........................................ 13
Scrapping and waste disposal ....................................... 13
............................................................ 6
Before fitting the working tool ......................................7
Fitting the working tool ............................................8
Removing the working tool .........................................8
Throttle lever.....................................................9
Feed control .....................................................9
Trigger.........................................................10
Oil regulating valve ..............................................10
Starting the rock drill .............................................11
Stopping the rock drill ............................................11
Re-positioning the pusher leg .....................................11
Blow-cleaning the drill hole........................................11
When you have finished drilling ....................................12
Selection of spare parts ..........................................12
Once a shift (after 8 hours of operation) .............................12
Once a week (after 40 hours of operation) ............................13
Once a month (after 200 hours of operation)..........................13
..................................................... 5
Trouble shooting
Spare parts list and exploded drawing
..................................................... 14
................................... 16
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Scope of application
Secoroc YT29A is a heavy-duty pusher leg Rock Drill featuring high efficiency and
low air consumption. It is primarily designed for drilling in mines, hydropower
stations, and road construction projects. It is also a new product suitable for
tunneling and other stone works in mining and metallurgical industry.
Secoroc YT29A is suitable for both horizontal and upward anchor holes in mediumhard and hard rocks (100–350 MPa). The hole diameter range is from 32 mm to 45
mm with depths up to 5 meters. The Rock Drill is equipped with lubricator FY250.
Secoroc YT29A is intended to be used together with pusher leg FT160A, FT160B,
FT160C or FT170 for different tunneling and work conditions. It is also designed for
dry drilling or wet drilling mounted on rigs.
Specification
Pneumatic rock drill YT29A
Weight 27 kg
Dimension (L x W x H) 659x248x205 mm
Cylinder diameter 82 mm
Piston stroke 60 mm
Working pressure 3,5–5 Bar(e)
Impact energy (at 5 bar(e)) ≥70 J
Air consumption (at 5 bar(e)) ≤65 l/s
Impact frequency (at 5 bar(e)) ≥37 Hz
Water pressure working pressure -1 Bar(e)
Air hose inner diameter 25 mm
Water hose inner diameter 13 mm
Drilling diameter 32–45 mm
Max Drilling depth 5 m
Working temperature -30 to +45 ºC
Shank size H22x108±1 mm
Noise level ≤127 dB(A)
Lubricator FY250
Weight 1.2 kg
Capacity 0.25 litre
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Safety instructions
To reduce the risk of serious injury or death to yourself or others, carefully read
through this instruction booklet before putting the rock drill to use. Always follow
the instructions given.
h Always wear a safety helmet, goggles and ear protectors with CE mark during
drilling. Any local regulations that exist must also be observed.
h When drilling in certain minerals, there is a risk of spark generation. Before
starting work, check that the machine is approved (in accordance with local
regulations) for work under such conditions.
h Always take great care when using the machine. The working tool is subjected to
heavy loading and can break, with a risk of injury to personnel.
h Check that the hoses used are of the right quality, and that all hose connections
are in good condition and properly tightened.
h Before starting work on any of the systems, make sure that the air and water
systems are without pressure.
h Make sure that there are no concealed wires or other sources of electricity. Never
drill near any electric wires or other sources of electricity.
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Operation
Using the rock drill for the first time
When the rock drill arrives from the factory, the inside of the tool is coated with
heavy oil to prevent corrosion.
After unpacking and installing the tool, pour a small amount of lubrication oil into
the air connection and operate the tool on partial throttle to clean the interior.
Follow this immediately with a liberal amount of air tool oil.
The rock drill and pusher leg are lubricated with oil mixed with compressed air,
which is taken to the parts that need continuous lubrication. Oil is metered into the
compressed air using the FY250 lubricator connected to the air line.
Preparations before starting
1. Check the drilling equipment
h Check that all of the drilling equipment is in good working order.
h Check that the impact surface of the working tool shank is flat, with no signs of
wear.
h Make sure that the air inlet and exhaust ports are free from obstructions.
h Check that the flushing holes in the working tool and drill bit are not blocked, and
that the flushing air/water flows through without obstruction.
h Ensure that the fittings are tight and leak-proof.
WARNING
Always check for damaged or loose hoses and fittings before operation.
Whipping hoses can cause serious injury.
2. Blow out the air hose
h Every day before using the drill, blow out the air hose to clear it from
accumulated dirt and moisture.
3. Fill the lubricator with oil
Check the lubrication oil level, fill the lubricator if necessary.
Note! Check that the chuck and working tool shank are always covered by a film of
oil.
Note! Always use a recommended lubricant. Operation without lubrication is not
allowed.
Lubricant Recommendation
Air tool oil Use a mineral-based air tool oil
Ambient temperature ºC Viscosity grade (ISO 3448)
-30 to 0 ISO VG 32-68
-10 to +20 ISO VG 68-100
+10 to +50 ISO VG 100-150
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